Introduction

Objectives

1. Understand the material for this section.
2. Name and describe some of the basic data types in Java.
3. Distinguish between a variable and a constant.
4. Understand the basic operations involved with Input/output.
5. Understand some basic operations on data.

Notes

• In this section we will be looking at
  • The basic types of data we can deal with in Java, Chapter 2 section 2
  • The basics of input and output Chapter 2, section 4 and supplemental.
  • Some of the basics of expressions in Chapter 2 section 5.
• Note for now I am skipping 2.3 Strings, classes, objects and subroutines.
• What will we be looking at?
  • Data and basic data types.
  • Variables, constants and identifiers.
  • Methods for output.
  • Methods for input.
  • How to perform simple computations.
• We will write a few more programs together
  • Please look at these carefully.
  • Run them and see how they work.
  • Make sure that you understand what everything is doing.
  • You will have a new programming assignment that will use these ideas.
• Pay attention to how I develop code.
  • The style, including variable and constant names.
  • Indentation and spacing
  • In the end, I expect you to copy this.
• Don't forget, one of our goals is to be able to design programs, so don't skip the terms.
  • Most of these are universal in programming
  • And this is the language developers, programmers, and designers speak.